This section is from the book "Handbook Of Hardy Trees, Shrubs, And Herbaceous Plants", by W. Botting Hemsley. Also available from Amazon: Handbook of hardy trees, shrubs, and herbaceous plants.
This is a very large genus containing nearly one hundred species, chiefly from tropical climates. Like the last, it has naked sori, but here they are linear. The name is from naked, and , writing, in reference to the naked sori.
1. G. leptophylla. - This is a dwarf fragile annual species with bi- or tri-pinnate tufted fronds and narrow linear pinnules. The inner fronds are on longer stipes, and more fruitful than the outer. It is a very widely distributed plant, and may be raised from spores with very little trouble.